package/kernel/mac80211/patches/rt2x00/005-rt2x00-use-different-txstatus-timeouts-when-flushing.patch

   1 From adf26a356f132e35093585521ea3e36cd185af83 Mon Sep 17 00:00:00 2001
   2 From: Stanislaw Gruszka <sgruszka@redhat.com>
   3 Date: Wed, 26 Sep 2018 12:24:56 +0200
   4 Subject: [PATCH 05/28] rt2x00: use different txstatus timeouts when flushing
   5
   6 Use different tx status timeouts for normal operation and when flushing.
   7 This increase timeout to 2s for normal operation as when there are bad
   8 radio conditions and frames are reposted many times device can not provide
   9 the status for quite long. With new timeout we can still get valid status
  10 on such bad conditions.
  11
  12 Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
  13 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  14 ---
  15  .../net/wireless/ralink/rt2x00/rt2800lib.c    | 31 +++++++++++++------
  16  drivers/net/wireless/ralink/rt2x00/rt2x00.h   |  1 +
  17  .../net/wireless/ralink/rt2x00/rt2x00mac.c    |  4 +++
  18  3 files changed, 26 insertions(+), 10 deletions(-)
  19
  20 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
  21 +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
  22 @@ -1137,36 +1137,47 @@ void rt2800_txdone(struct rt2x00_dev *rt
  23  }
  24  EXPORT_SYMBOL_GPL(rt2800_txdone);
  25
  26 -static inline bool rt2800_entry_txstatus_timeout(struct queue_entry *entry)
  27 +static inline bool rt2800_entry_txstatus_timeout(struct rt2x00_dev *rt2x00dev,
  28 +                                                struct queue_entry *entry)
  29  {
  30 -       bool tout;
  31 +       bool ret;
  32 +       unsigned long tout;
  33
  34         if (!test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
  35                 return false;
  36
  37 -       tout = time_after(jiffies, entry->last_action + msecs_to_jiffies(500));
  38 -       if (unlikely(tout))
  39 +       if (test_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags))
  40 +               tout = msecs_to_jiffies(100);
  41 +       else
  42 +               tout = msecs_to_jiffies(2000);
  43 +
  44 +       ret = time_after(jiffies, entry->last_action + tout);
  45 +       if (unlikely(ret))
  46                 rt2x00_dbg(entry->queue->rt2x00dev,
  47                            "TX status timeout for entry %d in queue %d\n",
  48                            entry->entry_idx, entry->queue->qid);
  49 -       return tout;
  50 -
  51 +       return ret;
  52  }
  53
  54  bool rt2800_txstatus_timeout(struct rt2x00_dev *rt2x00dev)
  55  {
  56         struct data_queue *queue;
  57         struct queue_entry *entry;
  58 +       unsigned long tout;
  59 +
  60 +       if (test_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags))
  61 +               tout = msecs_to_jiffies(50);
  62 +       else
  63 +               tout = msecs_to_jiffies(1000);
  64
  65 -       if (time_before(jiffies,
  66 -                       rt2x00dev->last_nostatus_check + msecs_to_jiffies(500)))
  67 +       if (time_before(jiffies, rt2x00dev->last_nostatus_check + tout))
  68                 return false;
  69
  70         rt2x00dev->last_nostatus_check = jiffies;
  71
  72         tx_queue_for_each(rt2x00dev, queue) {
  73                 entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
  74 -               if (rt2800_entry_txstatus_timeout(entry))
  75 +               if (rt2800_entry_txstatus_timeout(rt2x00dev, entry))
  76                         return true;
  77         }
  78
  79 @@ -1195,7 +1206,7 @@ void rt2800_txdone_nostatus(struct rt2x0
  80                                 break;
  81
  82                         if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags) ||
  83 -                           rt2800_entry_txstatus_timeout(entry))
  84 +                           rt2800_entry_txstatus_timeout(rt2x00dev, entry))
  85                                 rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
  86                         else
  87                                 break;
  88 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
  89 +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
  90 @@ -665,6 +665,7 @@ enum rt2x00_state_flags {
  91         DEVICE_STATE_STARTED,
  92         DEVICE_STATE_ENABLED_RADIO,
  93         DEVICE_STATE_SCANNING,
  94 +       DEVICE_STATE_FLUSHING,
  95
  96         /*
  97          * Driver configuration
  98 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
  99 +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
 100 @@ -720,8 +720,12 @@ void rt2x00mac_flush(struct ieee80211_hw
 101         if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
 102                 return;
 103
 104 +       set_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags);
 105 +
 106         tx_queue_for_each(rt2x00dev, queue)
 107                 rt2x00queue_flush_queue(queue, drop);
 108 +
 109 +       clear_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags);
 110  }
 111  EXPORT_SYMBOL_GPL(rt2x00mac_flush);
 112